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Did 4 speeds come with 1350 u joints?

Discussion in 'The Garage' started by stallion85, Sep 4, 2004.

  1. stallion85

    stallion85 1/2 ton status

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    I was told when I did my axle swap that my rear drive shaft already had 1350 u joints. I told the guy it was off a half ton chevy and he replied that he had been doin his job for 20 yrs and he was telling me the truth. Any ways I installe the rear driveshaft to the 14ff with no changes. SHorlty after that I started getting a hellacious vibration which seemed like the tranny. I was checking u joints and found the rear u joint would move up and down between the dog ears on the yoke. I had bought a spare 3/4 u joint from Napa and put it in the yoke and it did the same thing. WTF is going on??? Please help.
     
  2. big pappa b

    big pappa b 3/4 ton status

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    There shouldn't be any slop between the ears and the ujoint caps. They fit in nice and snug. When I did my swap the original were 1310. Quite a bit of difference between the 2.
    I bought different yokes for the 14b. I think I ordered one from Jesse @ High Angle for like $55-60. Then you can use the 1350's
     
  3. Russ

    Russ 1/2 ton status

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    My 1990 Blazer with a 465 tranny came stock with 1350 joints at rear axle.

    Russ
     
  4. big pappa b

    big pappa b 3/4 ton status

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    Could be the difference. My was stock with 3 speed manual and a straight 6..12 bolt rear
     
  5. tarussell

    tarussell 1/2 ton status

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    I think NVRENUF's original K-10 came with a 1350 at the rear transfercase yoke ( TRUCK ORIGINALLY CAME WITH A 465 ) .
    A friend of mine and I bought two K-30 Crew Cabs and the one with the 465 had 1350's all trough the rear shafts and the TH400 one had a 1310 at the T/C yoke ( both trucks were just as they came from GM ) .

    If you look at some parts books for U-joints they show the center U-joint on a carrier bearing shaft set up on some K-30's with auto's to be a 1310 and all standard tranny's to have a 1350 for our type trucks.
    Tom
     
  6. TruckNutzDude

    TruckNutzDude 1/2 ton status

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    This has me confused... so if my '79 K5 came stock with a 465/205 then my 205 has a 1350 yoke on it? Correct? /forums/images/graemlins/thinking.gif
     
  7. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    From my "info" pages...

    1310 - 3.250 x ???
    1330 - 3.625 x 1.125 OR 1.063
    1350 - 3.625 x 1.188
    1410 - 4.250 x 1.188
     
  8. 84_Chevy_K10

    84_Chevy_K10 Banned

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    '81 and up 1/2 ton trucks with 465s came with 1350 u joints from the factory, that is correct.

    All 3/4 and 1 ton trucks reguardless of transmission choice already have 1350s everywhere in the rear shaft with the rare exception of a two piece driveshaft will occassionally have a 1310 in the middle of it with 1350s on both ends.

    In the '70s, however, manual tranny 1/2 tons still had 1310s, thus why I had to upgrade my rear output yoke to a 1350 to gain strength there.
     
  9. tarussell

    tarussell 1/2 ton status

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    Some six cylinder auto tranny equiped K-30's with a three U-joint rear shaft came with a 1310 at the T/C and center joint .
    Tom
     
  10. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    Some six cylinder equiped K-30's with a three U-joint rear shaft came with a 1310 at the T/C and center joint .
    Tom

    [/ QUOTE ]

    Yeah the two piece driveshaft trucks throw you a curveball sometimes.
     
  11. sled_dog

    sled_dog 1 ton status

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    I had this problem at one point. Just replacing my factory joint. Autozone kept giving me the automatic joint for my 84 K5 and it slopped back and forth between the ears and vibrated like heck. I finally gave up and went to napa, they gave me the right one first try.
     
  12. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I guess I wouldn't know, I have never had a stock 4 speed truck. /forums/images/graemlins/eek.gif

    2-0053 is the part number you want though. /forums/images/graemlins/thumb.gif
     
  13. stallion85

    stallion85 1/2 ton status

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    Well I do have 1350's in my driveshaft and I just bought 2 brand new 1350's. I placed one of the new ones in the yoke on the 14ff and between the dog ears there is enough slack to move the caps up and down. Not too much but I am sure that is whats causing my vibration. So with that said my resolution would prob be to get a new yoke? /forums/images/graemlins/ears.gif
     
  14. stallion85

    stallion85 1/2 ton status

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    Oh yea thanks for all the info... /forums/images/graemlins/thumb.gif
     

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